&amp;amp;amp;amp;amp;lt;a href=&amp;amp;amp;amp;amp;quot;http://mths.co/f/4329&amp;amp;amp;amp;amp;quot;&amp;amp;amp;amp;amp;gt;Christmas Tree Line Design&amp;amp;amp;amp;amp;lt;/a&amp;amp;amp;amp;amp;gt; - found on MathsFaculty